TP5框架实现签到功能的方法分析

CREATE TABLE `sp_sign` (
 `id` int(11) NOT NULL AUTO_INCREMENT COMMENT "主键",
 `times` datetime DEFAULT NULL COMMENT "最近一次签到时间",
 `userid` int(11) DEFAULT NULL COMMENT "用户id",
 `days` tinyint(6) NOT NULL DEFAULT "0" COMMENT "连续签到的天数",
 `number` decimal(10,0) NOT NULL DEFAULT "0" COMMENT "当月签到给的积分",
 `one` varchar(255) DEFAULT NULL COMMENT "当月签到的日期，用“，”隔开",
 `two` varchar(255) DEFAULT NULL COMMENT "上个月签到的日期，用“，”隔开",
 `three` varchar(255) DEFAULT NULL COMMENT "上上个月签到的日期，用“，”隔开",
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;

/**
   * 用户签到
   * @param array $userid 用户id
   */
  public function add($userid)
  {
      $data = Db::name("sign")->where("userid",$userid)->select();
      if(count($data) == 0) //没有该用户的签到记录
      {
        $query4 = Db::name("sign")->insert(["times"=>date("Y-m-d H:i:s"),"userid"=>$userid,"days"=>1,"number"=>"15","one"=>date("d",time())]);
        return 1;
      }
      else
      {
        //判断今天是否签到
        $todayBegin=date("Y-m-d"." 00:00:00");
        $todayEnd= date("Y-m-d"." 23:59:59");
        $isexit = Db::name("sign")->field("times")->where(["userid"=>$userid])->where("times","between",[$todayBegin,$todayEnd])->select();
        if(count($isexit) == 1)  //今日已签到
        {
          return 0;
        }
        else  //今日未签到
        {
          $times = Db::name("sign")->where("userid",$userid)->field("times")->select();
          $time = strtotime($times[0]["times"]);
 
          if((time()-$time > 24*60*60))    //上次签到时间大于24小时，连续签到天数清零
          {
            $query = Db::name("sign")->where("userid",$userid)->update(["days"=>1]);
          }
          else   //上次签到时间小于24小时，连续签到次数加1
          {
            $query = Db::name("sign")->where("userid",$userid)->setInc("days");
          }
          //更新上次签到时间和签到积分
          $query1 = Db::name("sign")->where("userid",$userid)->update(["times"=>date("Y-m-d H:i:s")]);
          $query2 = Db::name("sign")->where("userid",$userid)->setInc("number", 15);
 
          $sqldate = date("m",$time);  //上次签到日期的月份
          $nowdate = date("m",time()); //当前月份
          //记录本次签到日期
          if($sqldate != $nowdate) //上次签到日期与本次签到日期月份不一样
          {
            $oldtime = $times[0]["times"];
            $Onetime=date("Y-m-d H:i:s", strtotime("-1 month")); //获取前1个月的时间，获取格式为2016-12-30 13:26:13
            $twotime=date("Y-m-d H:i:s", strtotime("-2 month")); //获取前2个月的时间
            $threetime=date("Y-m-d H:i:s", strtotime("-3 month")); //获取前3个月的时间
 
            $rs = Db::name("sign")->where("userid",$userid)->field("one,two,three")->select();
 
            if($oldtime <$onetime && $oldtime >= $twotime)   //月份间隔 大于1个月，小于2个月
            {
              $One= date("d",time());
              $two = $rs[0]["one"];
              $three = $rs[0]["two"];
            }
            elseif($oldtime <$twotime && $oldtime >= $threetime) //月份间隔 大于2个月，小于3个月
            {
              $One= date("d",time());
              $two = "";
              $three = $rs[0]["one"];
            }
            elseif($oldtime <$threetime) //月份间隔 大于3个月
            {
              $One= date("d",time());
              $two = "";
              $three = "";
            }
            $query3 = Db::name("sign")->where("userid",$userid)->update(["one"=>$one,"two"=>$two,"three"=>$three]);
          }
          else //上次签到日期与本次签到日期月份一样
          {
            $One= Db::name("sign")->where("userid",$userid)->field("one")->select();
            $arr[] = $one[0]["one"];
            $arr[] = date("d",time());
            $newOnes= implode(",",$arr);
            $query3 = Db::name("sign")->where("userid",$userid)->update(["one"=>$newones]);
          }
        return 1;
        }
      }
  }